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Don,
The one in your photos is a late '32 4-cylinder assembly from a commercial vehicle or large truck. The only difference between it and that used on the 4-cylinder passenger car is the depth of the large countersunk washer that mounts on the passenger compartment side of the firewall insulation pad. In this case it quite shallow compared to the one used on passenger cars. The reason is that the insulation in many (but not all) commercial vehicle and truck pads was thinner than the insulation in passenger car pad. Presumably it was a cost saving. What makes it a late version is the curve in the shank of the pedal. The earlier version was basically straight. The change was made to provide more toe room.
The '33-'34 pickup, panel delivery, and big truck accelerator cross shaft for four-cylinder engines has a noticeably different shape to it even though the pedal portion is the same as the late '32 pedal.